C312312111133131212111133133313231333133313331333131211111211113313232233122331   >>    C31231211113313121211113313331323133313331333133313121111121111331323223312233   <<    C312312111133131212111133133313231333133313331333131211111211113313232233122333   >>      C312312111133131212111133133313231333133313331333131211111211113313232233122332   >>